Fixture used in the manufacture of piston-rings.



R. P. ELLIOTT. FIXTURE USED IN THE MANUFACTURE OF PISTON RINGS.

APPLICATION FILED` FEB.27. 1918.

Patented Jan. 28, 1319.

NTES PATENT OFFICE.

FXTRE USER ll THE MANUFAGTURE Ol? ESTON-RINGS.

Seeceetion or" Letters Eatent.

I Application led 'Febrnsry 2'?, 1913. Serial No. 219,38*?.

which the folleivii'ig is a specification, reter-- ence being had therein to the accompanying' drawings,

This invention relates to fixtures for use in nmchining operations npon the interior of cylindrical collars or rings and more especially to a fixture for holding either one or a plmg'ality of such cellars or rings during the maclnriningr` operation.

Une ot the objects of my invention is to ,irovide a device for holding either one or nere collars, rings, or the like, during a machining operation. y

Another objeetot my invention is to previde e.. device which may be loaded with either one er a plurality of collars or rings and unloaded rapidly at the end el the ma- :hining` operation.

Still another object of my invention is te provide a device which may be self clean- Y ing when the ring' or rings are ejected at the end oi' the machining operation.

,El ii'urther object of my invention is to provide a device for attaining' the above mentioned objects which will be accurate in ation and may be cheaply constructed. obj

cts will be in part obvious and pointed out hereinafter.

the i aconnjmnying drawings illustrat e one enibediment of my invention, yliigure s a cross--sectional view of my device; Fig. 'i end view looking from right to leit n l..

Briefly described my invention' contemplates a hollow. cylindrical member having a clamping; member removably secured 'to -one end, and an inwardly projecting shoulder in its ii'iterior near its other end. The

parts are so arranged that at the end of a ciechining1 operation a removable cup-shaped member may be pushed lengthwise the hollow cylindrical member, carrying' with it `the collars or rings mounted therein, and all dirt and chips `which may have accumulated in the interior et the fixture durmg the ma,- chiningf opedion.

gli c. "3x11 liv?.- v l if iq M yi/v t e nel .e ,i Wim( Meer ont y is represen ed i hss dem; s 'i1 and i2 at cr is se! curea1 to the flange 1Q by n'ieans of bolts or screws 1li or in any other suitable manner. shoulder 15 is formed upon the interior of the cylinder 10 near its inner end. The tup-sharedv member 16 is adapted to be inserted in the interior or' the member 10 and to impingre against the shoulderA 15. The extending' edge 17 of the cup-shaped member 16 acts as a stop. The ixtnre is shown as used to machine piston rings wh-iclrare represented at 19 and may be contracted or closed in at their slots indicated at 2O and inserted in the interior ofthe member 10, the ring being pressed firmly against the extending edge 1T and each succeedingring pressed firmly against its neighbor until the ilxtnre is loaded. The length of. the member l may be predetermined so as to allow the last ring' to project slightly beyond the edge of the ange 12. The clamping member- 13 may now be secured to the body and drawn up firmly by means of screws lil so as to exert pressure on the rings, thus holding them firmly during' a machining' operation. T he elan'lping member 13 is provided ,with a hole 21 slightly larger than the in terior of the piston rings, and the cup- .shaped member 16 is ot' substantially the same inside dian'ieter as Ythe hole 21, thus all lowing free access to the interior of the rings. The chamber 18 is provided so that a cul'tinzgr tool or grinding' wheel may pass bevond the piston ri-ngndjacent the edge 17 so as to insure said rings being completely finished.

The member 10 maybe secured by screws or bolts or in any other suitable marmer,

to a face plate represcntedby dotted lines at Q2, in Fig. 1. The face plate 22 may in turn be mounted in a hollow spindleQll runningin thel bearing 25 of a lathe. grinderpr other machine tool. At the end 0f the mal-inningoperation the clamping member 13 may be removed and a rod 27 inserted through the hollow spindle 24e until it in'ipinges against `the rear wall 26 of the cu p-shaped stop 16. By pressing upon the rod 27 the rings 1S) and cup-shaped n'iember 16 together with all the acemnulated dirt and chips will be quickly ejected from the body 10 leaving it clean and ready for reloadine. i

l have chosen to illustrate my device as adapted for handling;V a plurality of piston but it is of course, understood, that remmen Jan. 2s, 1919.

articles may be held in my device. It should be understood as well that my device is equally adapted to hold rings or collars and the like having either concentric or eccentric innel and outer walls, this being dependent upon the location of the body member l0 with reference to the axis of the spindle 2l.

Home ot the advantages of my invention may be pointed out as follows: I have prorided a device which greatly facilitates the high speed accllrate machining of the interior walls ot collars or rings and the like; that when the cup-shaped member 16 is moved to eject the piston rings at the end of the machining operation, all ot the accu-v mulated dirt and chips are removed and the device may be termed seit cleaning. The parts are Jt'ew and simple; wear is reduced to a minimum and b v providing ixturesoi` suitable inside diameters and lengths a large range, ot sizes may be economicallv handled.

I do not wish to be limited to the specilic t'orms ot' the parts ot' my invention as illustrated herein but desire to claim it broadly.

What I claim is:-

l. In a device. of the character described, in combination, means for supporting piston rings during a machining operation, means for retaining said piston rings iii position and means comprising a cup-shaped member f tor removing said rings at'ter the machining operation is completed.

2. In a device ot' the characterdescribed, in combination, iiicalis t'or supporting piston rings during a machining operation, means comprising` an adjustable cap t'or retaining said piston rings in position and means comprising a cup-shaped member for removing said rings after the machining operation is completed.

3. In a device ot thc character described, in combination, nicans'tor supporting piston rings during a machining operation, means within said supporting m laus 't'oi preventing movement ot' the rings in one direction vand means comprising an adjustable cap for preventing-movement of the rings in the opposite direction.

4, In a device of the character described, in combination, a hollow supporting member, a movable stop within said supporting member and means adapted to enter Said supporting member to move said stop.

In a device of the character described, in combination, means for supporting and holding piston rings during a machining operation and removable means including a cup-shaped member for ejecting said rings and accumulated chips at the end of said machining operation.

6. 1n a device of the character described, in combination, a hollowcylii'idrical member adapted to support piston rings during a machining operation, a circular cap removably secured to said supporting member, a removable cup-shaped member adapted t0 serve as a stop tor said rings and further adapted'to eject said rings and accumulated chips at the completion of said machining operations. and means for ejecting said cupshaped member and the rings.

T. In a device ot' the character described, in combination, a hollow cylindrical member open at one end and provided with an inwardly projecting piston at the other end, said hollow cylindrical member being adapted to support piston rings during a machining operation; a circular cap removably se cured to the outer end of said hollow cylindrical Isupporting member, a removable cupshaped stop tor the piston rings arranged within said suj'iporting member and being adapted to impinge against said shoulder, and means t'or ejecting the cup-shaped stop and thc piston rings at the end of the machining operation.

In witness whereof. I hereunto set my hand this twenty-fifth day of February, i918.

R ICI [ARD l?. ELLIOTT. 

